| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2022-09-13 |
| タイトル |
|
|
タイトル |
Damage micromechanisms of stress corrosion cracking in Al-Mg alloy with high magnesium content |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Stress corrosion cracking |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Al-Mg alloy |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Hydrogen embrittlement |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Nanotomography |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Phase-contrast imaging |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 著者 |
HIRAYAMA, Kyosuke
TODA, Hiroyuki
FU, Dongsheng
MASUNAGA, Ryohei
SU, Hang
SHIMIZU, Kazuyuki
TAKEUCHI, Akihisa
UESUGI, Masayuki
|
| 著者(機関) |
|
|
値 |
Department of Mechanical Engineering, Kyushu University |
| 著者(機関) |
|
|
値 |
Department of Mechanical Engineering, Kyushu University |
| 著者(機関) |
|
|
値 |
Department of Mechanical Engineering, Kyushu University |
| 著者(機関) |
|
|
値 |
Department of Mechanical Engineering, Kyushu University |
| 著者(機関) |
|
|
値 |
Department of Mechanical Engineering, Kyushu University |
| 著者(機関) |
|
|
値 |
Department of Mechanical Engineering, Kyushu University |
| 著者(機関) |
|
|
値 |
Japan Synchrotron Radiation Research Institute |
| 著者(機関) |
|
|
値 |
Japan Synchrotron Radiation Research Institute |
| 登録日 |
|
|
日付 |
2022-09-13 |
| 書誌情報 |
Corrosion Science
巻 184,
p. 109343,
発行日 2021-02-24
|
| ISSN |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0010938X |
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Al-10Mg alloys, which are highly susceptible to SCC, were prepared with various β precipitate morphologies. Interrupted in-situ tensile tests were conducted under synchrotron X-ray radiation, employing a recently developed X-ray microtomography technique that combines high-energy, applicability to metallic materials, and ultra-high resolution. Preferential dissolution of the β phase along grain boundaries, and incidental intergranular and transgranular fracture, were observed in 3D. A drastic decrease in SCC resistance was measured after hydrogen charging. The additional effect of external hydrogen absorbed from an aqueous solution during loading was also revealed, by directly measuring crack-tip plasticity. The aquatic environment, one of the most extreme conditions for hydrogen uptake, caused continuous crack-tip corrosion. Catastrophic failure was observed when an alloy had both a relatively high areal grain boundary coverage by film-like β phase, and a reticulately interconnected plate-like β phase in the grain interior. Hydrogen bubble formation was also observed, in relation to the progress of crack-tip corrosion. The main corrosion product was identified as Al(OH)3, based on its linear absorption coefficient. The respective amounts of corrosion products and hydrogen gas in the gas bubbles, and the pH value of the aqueous solution, were accurately measured during in-situ tensile testing, enabling estimation of the local elevation of hydrogen content in the crack-tip vicinity. Finally, a quantitative criterion for the occurrence of hydrogen embrittlement in inter-β ligaments is discussed, together with the applicability of the findings to the prevention of SCC. |
| 抄録（URL） |
|
|
表示名 |
Damage micromechanisms of stress corrosion cracking in Al-Mg alloy with high magnesium content |
|
URL |
https://www.sciencedirect.com/science/article/pii/S0010938X21001098 |
| 出版者 |
|
|
出版者 |
Elsevier Ltd. |
| 権利 |
|
|
権利情報 |
© 2021 The Authors. |
| 権利URI |
|
|
権利情報 |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| DOI |
|
|
関連タイプ |
isIdenticalTo |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
info:doi/10.1016/j.corsci.2021.109343 |
| 著者版フラグ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
cs-v184p109343 (19.1 MB)
